seata/test/target/test-classes/saga/statelang/simple_statelang_with_loop.json

{
    "Name": "simpleLoopTestStateMachine",
    "Comment": "带循环参数的测试状态机定义",
    "StartState": "FirstState",
    "Version": "0.0.1",
    "States": {
        "FirstState": {
            "Type": "ServiceTask",
            "ServiceName": "demoService",
            "ServiceMethod": "foo",
            "CompensateState": "CompensateFirstState",
            "Loop": {
                "Parallel": 3,
                "Collection": "$.[collection]",
                "ElementVariableName": "element",
                "ElementIndexName": "loopCounter",
                "CompletionCondition": "[nrOfCompletedInstances] == ([collection].size()-4)"
            },
            "Input": [
                {
                    "loopCounter": "$.[loopCounter]",
                    "element": "$.[element]",
                    "throwException": "$.[fooThrowException]"
                }
            ],
            "Output": {
                "fooResult": "$.#root"
            },
            "Next": "ChoiceState"
        },
        "ChoiceState":{
            "Type": "Choice",
            "Choices":[
                {
                    "Expression": "[loopResult].?[#this[fooResult] == null].size() == 0 && [a] == 1",
                    "Next":"SecondState"
                },
                {
                    "Expression": "[loopResult].?[#this[fooResult] == null].size() == 0 && [a] == 2",
                    "Next":"CallSubStateMachine"
                }
            ],
            "Default":"Fail"
        },
        "SecondState": {
            "Type": "ServiceTask",
            "ServiceName": "demoService",
            "ServiceMethod": "bar",
            "CompensateState": "CompensateSecondState",
            "Loop": {
                "Parallel": 3,
                "Collection": "$.[collection]",
                "ElementVariableName": "element",
                "CompletionCondition": "[nrOfCompletedInstances] / [nrOfInstances] >= 0.4",
                "ElementIndexName": "loopCounter"
            },
            "Input": [
                {
                    "loopCounter": "$.[loopCounter]",
                    "loopElement": "$.[element]",
                    "throwException": "$.[barThrowException]"
                }
            ],
            "Catch": [
                {
                    "Exceptions": [
                        "io.seata.saga.engine.mock.DemoException"
                    ],
                    "Next": "CompensationTriggerTest"
                }
            ]
        },
        "CallSubStateMachine": {
            "Type": "SubStateMachine",
            "StateMachineName": "simpleCompensationStateMachine",
            "Loop": {
                "Parallel": 3,
                "Collection": "$.[collection]",
                "ElementVariableName": "element",
                "CompletionCondition": "[nrOfCompletedInstances] / [nrOfInstances] >= 0.4",
                "ElementIndexName": "loopCounter"
            },
            "Input": [
                {
                    "a": 1,
                    "collection": "$.[collection]",
                    "loopCounter": "$.[loopCounter]",
                    "element": "$.[element]",
                    "barThrowException": "$.[barThrowException]",
                    "fooThrowException": "$.[fooThrowException]",
                    "compensateFooThrowException": "$.[compensateFooThrowException]"
                }
            ],
            "Output": {
                "fooResult": "$.#root"
            },
            "Next": "Succeed"
        },
        "CompensateFirstState": {
            "Type": "ServiceTask",
            "ServiceName": "demoService",
            "ServiceMethod": "compensateFoo",
            "Input": [
                {
                    "compensateFooInput": "$.[fooResult]",
                    "throwException": "$.[compensateFooThrowException]",
                    "loopCounter": "$.[loopCounter]",
                    "element": "$.[element]"
                }
            ]
        },
        "CompensateSecondState": {
            "Type": "ServiceTask",
            "ServiceName": "demoService",
            "ServiceMethod": "compensateBar",
            "Input": [
                {
                    "compensateBarInput": "$.[barResult]",
                    "loopCounter": "$.[loopCounter]",
                    "loopElement": "$.[element]"
                }
            ]
        },
        "CompensationTriggerTest": {
            "Type": "CompensationTrigger",
            "Next": "Fail"
        },
        "Succeed": {
            "Type":"Succeed"
        },
        "Fail": {
            "Type":"Fail",
            "ErrorCode": "NOT_FOUND",
            "Message": "not found"
        }
    }
}